Tag: heredity and variation

Quizzes (8) Questions (4)

Questions Related to heredity and variation

Multiple choice zoology heredity and variation effects of smoking smoking tobacco drugs

Addiction of smoking leads to

  1. Lung cancer

  2. Bronchitis

  3. Emphysema

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Smoking is a practice in which a substance is burned and the resulting smoke breathed in to be tasted and absorbed into the bloodstream.
Emphysema is a form of chronic lung disease, usually caused by smoking.
Bronchitis is caused by tobacco smoke, dust, fumes, vapors and air pollution.
Changes in lung tissue begin when one inhale cigarette smoke.
Therefore, the correct answer is option D.

Multiple choice zoology heredity and variation effects of smoking smoking tobacco drugs

Out of 4000 chemicals released by cigarette, potent carcinogens are

  1. 12

  2. 43

  3. 216

  4. 172
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A substance that causes cancer is called a carcinogen. Cigarette smoke contains more than 4,000 chemicals out of which 43 are carcinogenic. Some of the carcinogens are nicotine, formaldehyde, benzene, carbon monoxide, etc. Most of the cigarette smoke remains in the lungs. This smoke damages the lung walls causing cancer. Thus the correct answer is option B.

Multiple choice zoology heredity and variation effects of smoking smoking tobacco drugs

Smokers metabolize nicotine to form

  1. Uric acid

  2. Urea

  3. Cotinine

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nicotine is a major constituent of tobacco, which plays a critical role in smoking addiction. In humans, nicotine is primarily metabolized to cotinine, which is further metabolized to trans-3'-hydorxycotinine.
Thus, the correct answer is option (C), 'Cotinine'.